【摘要】：鑒于目前網(wǎng)絡(luò)編碼在單跳無線網(wǎng)絡(luò)重傳中的應(yīng)用研究都是基于單發(fā)-多收場景的局限性,提出一種應(yīng)用于多發(fā)-多收無線網(wǎng)絡(luò)中的重傳機(jī)制NCWRM。該重傳機(jī)制中,網(wǎng)絡(luò)節(jié)點(diǎn)既可以是發(fā)送方也可以是接收方,節(jié)點(diǎn)發(fā)送的數(shù)據(jù)包在直傳和第一次重傳中都失敗后,第二次重傳時廣播發(fā)送由多個丟失數(shù)據(jù)包編碼組合得到的編碼包。多個接收方通過解碼編碼包得到丟失的數(shù)據(jù)包,從而實(shí)現(xiàn)一次重傳獲得多個丟失的數(shù)據(jù)包,可以有效提高重傳效率。理論分析和仿真結(jié)果表明,NCWRM算法能夠明顯提高系統(tǒng)的飽和吞吐量,同時減小開銷及丟包率。
[Abstract]:In view of the fact that the current research of network coding in single hop wireless network retransmission is based on the limitation of single transmit and multiple receiving scenario, this paper proposes a retransmission mechanism NCWRM. which is applied in multi-receiver wireless network. In this retransmission mechanism, the network node can be either the sender or the receiver, and the packet sent by the node fails after both the direct transmission and the first retransmission. On a second retransmission, the broadcast transmits an encoded packet obtained from a plurality of lost packet encoding combinations. The multiple receivers obtain the lost packets by decoding the encoded packets, so as to achieve a single retransmission to obtain multiple lost packets, which can effectively improve the efficiency of the retransmission. Theoretical analysis and simulation results show that the NCWRM algorithm can significantly improve the saturation throughput of the system, while reducing the cost and packet loss rate.
【作者單位】： 重慶郵電大學(xué)移動通信技術(shù)重點(diǎn)實(shí)驗(yàn)室;通信抗干擾國家級重點(diǎn)實(shí)驗(yàn)室(電子科技大學(xué));
【基金】：國家自然科學(xué)基金資助項(xiàng)目(61071118,60702055) 重慶市教委科研項(xiàng)目(KJ111506,KJ110524)
【分類號】：TN92

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本文編號：2288018